JP3223713B2 - Welding device for retrofit spring of aperture grill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color cathode ray tube (hereinafter referred to as a CRT) having springs welded to three sides in advance.
The present invention relates to a welding device for a retrofit spring for welding a spring to the other one side of the aperture grille.

[0002]

2. Description of the Related Art A CR using an aperture grill used in a television receiver or a monitor television of a computer.
In T, an aperture grille having a large number of slits is mounted inside a panel in which fluorescent paints of three primary colors (R, G, B) are applied on the inner surface, and electron beams of three primary colors emitted from an electron gun are provided. Are passed through the slits of the aperture grill and are applied to fluorescent paint portions of the corresponding color on the inner surface of the panel.

The aperture grill is composed of a frame formed in a substantially rectangular frame shape by four members of upper, lower, left and right, and a grill stretched on the frame. A large number of the slits extend vertically. The panel is a substantially rectangular shape having a dimension slightly larger than the grill and has a panel portion coated with the fluorescent paint on the inner surface, and four upper, lower, left, and right sides formed to extend from four sides of the panel portion to the inner surface side. The skirt portion is formed, and the panel portion is formed to have a size slightly larger than the grill. The attachment of the aperture grill to the panel was performed by welding a spring for attaching the panel to three or four members of the aperture grill, and attached to the pin holes of the spring and the inner surfaces of the three or four skirt portions of the panel. This is performed by engaging a pin.

If the distance between the surface of the grill and the inner surface of the panel portion varies depending on the location in the state where the aperture grill is mounted on the panel in this manner, the electron beam passing through the slit of the grill will cause the corresponding fluorescent paint spot on the panel portion to be applied. Is not accurately irradiated, which causes a problem such as color misregistration in a completed CRT. For this reason, particularly in a CRT requiring a high definition, such as a monitor television of a computer, or a CRT having a large screen size, the interval between the surface of the grill and the inner surface of the panel is always constant at any place. It is important to. The position of the surface of the grille relative to the inner surface of the panel portion is determined by the position of the inner surface of the panel portion as viewed from a plane including three or four pins of the panel, and the position of the grille as viewed from a plane including three or four pin holes of the aperture grille. It is determined by the position of the surface, of which the position of the inner surface of the panel portion as viewed from the plane of the panel is determined because the pins are already attached to the panel. For this reason, in determining the position of the grill surface with respect to the inner surface of the panel portion, the position of the pin hole when welding the spring to each member has a great effect, and therefore, in welding the spring to each member. It is necessary to set the welding position of the spring to each member according to the position of each pin of the panel, and to accurately weld the spring to the welding position.

In recent years, in particular, with the increase in the size and weight of the screen of a CRT, a four-point support system in which four panel pins and four aperture grill springs are used has been widely adopted. Such a four-point supporting C
In welding the springs to each member in the RT, it is preferable to weld four springs at the same time so that the relative positions of the pin holes of each spring do not deviate. In this case, since the four springs have different arrangements and directions, they are welded using individual welding machines, one for each spring, and these four welding machines are arranged outside the frame. In order to avoid interference with the positioning member and the like of the aperture grille, it is arranged inside the frame.

[0006]

In the case of a CRT having a relatively small screen size, for example, 16 inches, the size of the frame is reduced in accordance with the screen size. Therefore, four welding machines are arranged inside the frame. A large space for installation cannot be secured, and therefore, there is a problem that it is structurally difficult to weld the four springs simultaneously. Also,
When the four springs are welded simultaneously, if each spring is welded to a position slightly deviated from the predetermined welding position of each member, even if the displacement of the welding position of each spring is within the allowable range, the mutual contact between the springs is obtained. In some cases, the displacement of the relative position does not fall within the allowable range, and in such a case, there is a problem that the spring must be removed from each member and welded again.

Therefore, for example, Japanese Patent Application Laid-Open No. 5-299017
As in the method disclosed in Japanese Patent Application Laid-Open Publication No. H10-205, a pin hole of one of the four springs of the aperture grille is formed to have a size larger than that of the pin of the panel. If the coin having the pin hole is welded later, even if the four springs are welded several times, the positional deviation of each spring from the welded spot is finely adjusted. Can be absorbed and corrected.

Actually, one or both of the coin and the spring are deformed by heat or the like generated when the coin is welded to the spring, and the position of the pin hole of the coin after welding to the spring is determined by a corresponding pin on the panel. Can not be matched exactly to the position. Also, in this method, the coin must be welded to the spring in a state where the pin of the panel is engaged with the pin hole of the coin and the spring, and there is only a small gap between the panel and the coin. There is a problem that welding of the spring is extremely difficult.

SUMMARY OF THE INVENTION The present invention has been devised in view of the above circumstances, and an object of the present invention is to weld four springs simultaneously to weld four springs for mounting a panel to four sides of an aperture grille. The springs can be accurately welded to the aperture grill without disturbing the relative positions of the pin holes of the springs, and a large space around the spring is secured without mounting the aperture grill to the panel. It is another object of the present invention to provide a welding device that can easily weld the first spring and can accurately weld one spring remaining on the aperture grille to which the three springs are welded later.

[0010]

In order to achieve the above object, the present invention comprises a panel portion and four upper, lower, left and right skirt portions extending from four sides of the panel portion. A panel to which the mounting pins of the aperture grill are attached, and a panel disposed inside the panel and arranged inside the four sides facing each of the skirts so that the distance between the panel and the panel is constant. An aperture grille on which a grill for color selection is stretched, and three of the four sides of the aperture grille which are welded to each other and the aperture grille is disposed inside the panel, A panel mounting spring having a pin hole for engaging a pin of the three skirts facing three sides, wherein the spring is melted by the aperture grill. What is claimed is: 1. A welding device for a retrofit spring for welding a spring to one side which is not provided, wherein the welding device is disposed at a reference position corresponding to an arrangement of pins of the three skirts. Three first positioning pins that are respectively engaged with the pin holes, the first positioning pins are referred to as the reference locations, and the locations where the first positioning pins are separated from the pin holes of the three side springs. And a first engagement / disengagement moving mechanism for moving the first and second positioning pins, respectively, and the three first positioning pins are respectively engaged with pin holes of the three side springs. Coming, the first of the three
A second positioning pin disposed at a reference position whose arrangement with respect to the positioning pin coincides with the arrangement of the remaining one skirt portion pin with respect to the three skirt portion pins; and the second positioning pin, A second engagement / disengagement moving mechanism for moving from the reference point to a point moved in a direction away from the one side part with respect to the reference point, and welding to one side part of the aperture grille A spring supplying means for supplying a spring to the second positioning pin and engaging a pin hole of the spring with the second positioning pin; and a pin hole in the second positioning pin at the reference position of the second positioning pin. And a spring welding means for welding the spring engaged with the spring to one side of the aperture grill.

Further, the present invention provides a first position adjusting movement for moving at least one of the three first positioning pins in a direction intersecting with a moving direction of the first engagement / disengagement moving mechanism. A mechanism and a second position adjustment moving mechanism for moving the second positioning pin in a direction intersecting with the moving direction of the second engagement / disengagement moving mechanism are further provided. In addition, the present invention is characterized in that the amount of movement of the first positioning pin by the first position adjustment moving mechanism and the amount of movement of the second positioning pin by the second position adjustment moving mechanism are the position of the pin relative to the panel. It is determined according to the attachment position and the twist of the panel portion and the grill.

According to the present invention, a plane including three spring pin holes, which has a great influence on determining the position of the grill surface relative to the inner surface of the panel portion, is defined by the three spring pin holes welded first, and thereafter, Since the arrangement of the pin holes of one welded spring and the pin holes of the three welded springs match the arrangement of the four pins of the panel, four springs are simultaneously placed on the four sides of the aperture grille. Even if welding is not performed, the relative positions of the pin holes of the springs do not change.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a CR using an aperture grill is used.
The configuration of the panel constituting T and the aperture grill supported inside the panel will be described. FIG. 1 is a perspective view of a panel viewed from the back side. A panel 5 includes a substantially rectangular panel portion 501 and four upper, lower, left and right skirt portions extending rearward from four sides of the panel portion 501. 503. The panel portion 501 is formed so as to be curved so that the center portion protrudes forward rather than the left and right side portions,
Pins 5 are provided on the inner surfaces of the upper and lower skirt portions 503.
05 is attached.

FIG. 2 is a perspective view of the aperture grill as viewed from the back side. The aperture grill 1 is formed by upper and lower horizontal members 103 and left and right vertical members 105 connecting the rear surfaces of both horizontal members 103 to each other. A frame 101 formed in a substantially rectangular frame shape having a size slightly smaller than the panel portion 501, and a sheet-like grill 107 stretched between the front surfaces of the upper and lower horizontal members 103 inside the frame 101. It is configured. The horizontal member 103 is formed so as to be curved so that the center portion protrudes forward rather than the left and right side portions so as to correspond to the panel portion 501, and is spaced apart in the left and right direction by the grill 107. Many slits 1 extending vertically
A spring holder 111 (corresponding to the side of the aperture grill) is welded to the outer surface of the upper and lower horizontal members 103 and the left and right vertical members 105, respectively. The attachment of the aperture grill 1 to the panel 5 is performed by engagement between the springs 3 welded to the respective spring holders 111 and the pins 505 of the panel 5, and as shown in FIG. 1 is supported inside the panel 5.

The spring 3 is, as shown in FIG.
The intermediate portion 301 is formed in a rectangular shape in plan view by a base portion 303 and a tip portion 305 extending from both ends of the intermediate portion 301. The base portion 303 is bent toward the outer surface of the intermediate portion 301, and the tip portion 305 is It is bent toward the inner surface of the intermediate portion 301. The base 303 is welded to the spring holder 111, and in this state, the tip 305 is
A pin hole 307 that can be engaged with the pin 505 is formed in the tip 305, which is located outside the 105.

In the embodiment, three spring holders 1 of the lower horizontal member 103 and the left and right vertical members 105 are provided.
11, the springs 3 are already welded by a welding device (not shown). The three springs 3
For example, the holding pins of the welding device inserted into the respective pin holes 307 are used to determine the positions at which the pins 505 are attached to the skirts 503 of the panel 5 and the torsion of the panel 501 and the grill 107. The pin is moved so as to be located at the pin hole 307 calculated based on the measurement result, and the holding pins are brought closer to the lower horizontal member 103 and the left and right vertical members 105, and the springs 3 are applied to the spring holders 111 for positioning. In this state, the springs 3 are simultaneously welded by the three welding machines of the welding device so that the positions of the pin holes 307 between the springs 3 do not change. Thereby, the aperture grill 1
The aperture grille 1 is arranged inside the panel 5 so that the distance between the surface of the grill 107 and the inner surface of the panel portion 501 is always constant at any place. It is configured to match the position of one pin 505. Then, the spring holder 111 of the upper horizontal member 103 of the aperture grill 1 configured as described above is set by the welding device 7 according to the embodiment.
The spring 3 is welded.

FIG. 4 is a front view of the welding apparatus 7 according to the embodiment, FIG. 5 is a plan view thereof, and FIG. 6 is a side view thereof. The welding device 7 includes a base 9 having a rectangular shape in a plan view, which is long in front and rear, and the base 9.
A table 11 provided at the front of the upper surface of the table, aperture grill positioning support means (hereinafter abbreviated as support means) 13 provided on the table 11, spring positioning means 15, and a base behind the table 11 Spring supply means 17 provided at nine locations, spring welding means 19 provided at the rear of the table 11 and the like are provided.

The supporting means 13 includes a table 11 shown in FIG.
As shown in the plan view, two spring supports 21 for positioning and supporting the left and right vertical members 105 via the springs 3 and one spring support for positioning and supporting the lower horizontal member 103 via the springs 3. 23, two upper fixing portions 25 for fixing the left and right sides at the upper portion of the aperture grille 1 and two lower fixing portions 27 for fixing the left and right sides at the lower portion of the aperture grille 1.

The spring support 21 includes a pin 29 that can be engaged with the pin hole 307 of the spring 3 of the left and right vertical members 105, and a moving mechanism 31 that moves the pin 29 away from and close to the vertical member 105. Consists of FIG. 8 shows a side view of the moving mechanism 31, and the moving mechanism 31 includes a base plate 31 installed on the table 11.
01 and the guide rail 310 on the base plate 3101.
Moving plate 31 movably supported in a direction approaching and separating from vertical member 105 via slider 3 and slider 3105
07 and a screw shaft 31 supported on the table 11 via a bearing 1101 so as to be rotatable and axially immovable.
09, a motor 3111 (see FIG. 9) for rotating the screw shaft 3109, and a moving member 3113 that is screwed to the screw shaft 3109 and supports the moving plate 3105.
5 protrudes from a support 3115 erected on the upper surface 5. The moving mechanism 31 is configured such that the moving plate 3107 moves via a moving member 3113 by the rotation drive of the motor 3111, whereby the pins 33 engage and disengage with the pin holes 307. 9 is a view taken in the direction of arrow A in FIG.
Shows a view on arrow B in FIG.

As shown in FIG. 7, the spring support portion 23 comprises a pin 33 engageable with a pin hole 307 of the spring 3 of the lower horizontal member 103, and a moving mechanism 35 for moving the pin 33. As shown in a side view of FIG.
03 moving mechanism 37 for moving along the longitudinal direction of 03
And a forward / backward moving mechanism 39 for moving the pin 33 in a direction of moving away from and approaching the spring 3.

The left and right moving mechanism 37 is provided with the table 1
1, an intermediate moving plate 3705 supported movably along the longitudinal direction of the lower horizontal member 103 via a guide rail 3701 and a slider 3703, and rotatably and axially immovable on the table 11 via a bearing 1103. It includes a supported screw shaft 3707, a motor 3709 (see FIG. 12) for rotating the screw shaft 3707, and a moving member 3711 that is screwed to the screw shaft 3707 and supports the intermediate moving plate 3705. The left and right moving mechanism 37 is provided with the motor 370.
The intermediate driving plate 3705 is configured to move along the longitudinal direction of the lower horizontal member 103 via the moving member 3711 by the rotation driving of the nine.

FIG. 12 is a view taken in the direction of the arrow C in FIG. As shown in FIG. 12, the front / rear moving mechanism 39 includes a guide rail 3901 and a slider 3 on the intermediate moving plate 3705.
A movable plate 3905 supported so as to be movable in a direction away from and approaching the spring 3 via a 903; a screw shaft 3907 supported rotatably and axially immovably on the intermediate movable plate 3705 via a bearing 3713; Motor 390 for rotating this screw shaft 3907
9 (see FIG. 11) and the screw shaft 3907
Moving member 39 which is screwed to and supports the moving plate 3905
11, and the pins 33 protrude from support columns 3913 erected on the moving plate 3905. The forward / backward movement mechanism 39 is rotated by the motor 3909 to move in a direction in which the pin 33 moves away from and close to the spring 3 via a moving member 3911, a moving plate 3905, and a column 3913, and engages and disengages with the pin hole 307. It is configured to be.

In the embodiment, the spring support 2
3 is provided with a spring detachment mechanism 41. As shown in FIG. 11, the spring detachment mechanism 41 includes a bearing 3 at a location vertically spaced above the support 3913.
The two guide rods 410 each having the 915 inserted therethrough
1, a spring pressing member 4103 erected between the ends of both guide rods 4101 protruding from the column 3913 to the side where the pin 33 protrudes, and a side opposite to the side where the pin 33 protrudes from the column 3913. A connecting member 4105 for connecting the ends of the two guide rods 4101 protruding to the side, and a cylinder 4107 supported by a support 3913 via a bracket 3917 are provided. The tip of the piston rod 4109 of the cylinder 4107 is connected to the connecting member 4105
A groove 4111 for preventing interference with the pin 33 is formed on one side of the spring pressing member 4103. The spring releasing mechanism 41 is configured such that the spring pressing member 4103
It is configured to move away from the pin 13 and press the spring 3 engaged with the pin 33 to be separated from the pin 33. The support 31 of the spring support 21
15 is also provided with a spring detachment mechanism (not shown) similar to the spring detachment mechanism 41. In the embodiment, the pins 29 and 33 correspond to a first positioning pin, the moving mechanism 31 and the front-rear moving mechanism 39 correspond to a first disengaging moving mechanism, and the left and right moving mechanism 37 corresponds to a first position. FIG. 13 is a view taken in the direction of arrow D in FIG. 12.

As shown in FIG. 14, the upper fixing portion 25 includes a rear holding member 43 which can be engaged with a rear surface of the left and right vertical members 105 near the upper end, and a left and right end portion of the upper horizontal member 103 near the left and right ends. Front holding member 45 engageable with the front surface
And driving mechanisms 47 and 49 for engaging and disengaging the pressing members 43 and 45 with the members 103 and 105, respectively. The drive mechanism 47 of the rear holding member 43 includes a swing arm 4701 that can swing around a horizontal shaft 1105 supported by the table 11, and the swing arm 4701 connected to the horizontal shaft 1105 via a link 4703. The rear holding member 43 is attached to the tip of a swing arm 4701. When the lock-up cylinder 4705 is extended, the rear holding member 43 is operated by the link 4703 and the horizontal shaft 1.
By swinging the swing arm 4701 upward through the 105, the tip of the swing arm 4701 comes into contact with the rear surface of the vertical member 105,
The drive mechanism 47 is configured such that the lock-up cylinder 4705 is locked when the rear pressing member 43 contacts the rear surface of the vertical member 105, and the rear pressing member 43 is fixed.

The drive mechanism 49 of the front pressing member 45 has a substantially L-shape, and its intermediate portion is rotatable about a horizontal shaft 1107 supported by the table 11.
901, and a cylinder 4903 whose base end is rotatably supported about a horizontal axis 1109 on the table 11. The piston rod 490 of the cylinder 4903
5 is connected to the swing arm 490 via a pin 4907.
1 is rotatably connected to one end of the front holding member 45.
Is attached to the other end of the swing arm 4901.
The drive mechanism 49 swings the swing arm 4701 by the extension operation of the cylinder 4905 so that the other end side approaches the table 11 in a state where the front end of the rear pressing member 43 is in contact with and fixed to the rear surface of the vertical member 105. By moving the swing arm 4901, the front holding member 45 is configured to abut on the front surface of the upper horizontal member 103 and sandwich the aperture grill 1 together with the rear holding member 43. It contacts the outer surface of the horizontal member 103.

The lower fixing portion 27 is, as shown in FIG.
A lock-up cylinder 2701 supported so as to be swingable in a horizontal plane about a shaft 1111 protruding above the table 11, and a shaft 1113 protruding above the table 11
Arm 2703 whose base end is supported so as to be swingable in a horizontal plane with the center as the center, and can be attached to the distal end of this swing arm 2703 and can abut on the outer surfaces of the lower horizontal member 103 near the left and right ends. A press member 2705 is provided, and a portion near the base end of the swing arm 2703 is rotatably connected to a distal end of a piston rod 2709 of the lock-up cylinder 2701 via a pin 2707. The lower fixing portion 27 is configured such that the horizontal swing arm 2703 swings by the extension operation of the lock-up cylinder 2701,
The holding member 2705 approaches the upper side member 103 from the outside of the aperture grill 1 and abuts on the outer side surfaces thereof. At this time, the extension operation of the lock-up cylinder 2701 is stopped, and the swing arm 2703 is locked so as not to swing. It is configured to:

The spring positioning means 15 is for positioning the spring 3 against the spring holder 111 of the upper horizontal member 103 in a state where the aperture grill 1 is positioned and supported by the spring supporting portions 21 and 23, as shown in FIG. As shown in FIG.
07 that can be engaged with 07 (corresponding to the second positioning pin)
And a moving mechanism 53 for moving the pin 51.
As shown in the side view of FIG. 15, the moving mechanism 53 moves the pin 51 in the longitudinal direction of the upper horizontal member 103 and the left and right moving mechanism 55, and moves the pin 51 away from the spring 3 and in a direction approaching. A back-and-forth moving mechanism 57 and a vertically moving mechanism 59 for raising and lowering the pin 51 on the table 11
And a left-right moving mechanism 55 and an elevating moving mechanism 59
Corresponds to the second position adjustment moving mechanism,
Corresponds to the second disengagement moving mechanism.

The left and right moving mechanism 55 includes a guide rail 5
501, slider 5503, first intermediate moving plate 550
5, a screw shaft 5507, a motor 5509, and a moving member 5111. Like the left and right moving mechanism 37, the moving member 55 is driven by the rotation of the motor 5509.
The first intermediate moving plate 5505 is configured to move on the table 11 along the longitudinal direction of the upper horizontal member 103 via the table 11. In FIG. 15, reference numeral 1115 denotes a slit formed in the table 11, reference numeral 5513 denotes a guide plate vertically provided downward from the rear end of the first intermediate moving plate 5505, and the tip of the guide plate 5513 is formed by the slit 111.
5 is inserted.

The front-rear moving mechanism 57 includes a guide rail 5
701, slider 5703, second intermediate moving plate 570
5, a screw shaft 5707, a motor 5709 (see FIG. 16), and a moving member 5711, and the second intermediate moving plate is driven through the moving member 5711 by the rotational drive of the motor 5709 substantially in the same manner as the front-rear moving mechanism 39. 570
5 is configured to move on the first intermediate moving plate 5505 in a direction away from and approaching the upper horizontal member 103.
In FIG. 15, reference numeral 5713 denotes a second intermediate moving plate 570.
5 shows a guide plate vertically suspended from the rear end of the guide plate 5713. The tip of the guide plate 5713 is inserted into the slit 1115, and a guide rail 5715 is provided below the guide plate 5713.
The slider 5515 that slides on the guide rail 5715 is attached to the lower part of the guide plate 5513.

As shown in a plan view in FIG. 16, the lifting / lowering moving mechanism 59 includes a lifting / lowering plate 5901 disposed opposite to the guide plate 5713, and a lifting / lowering plate 5901 attached to the lifting / lowering plate 5901. A slider 5903 that can slide on the guide rail 5717, a screw shaft 5905 that is supported by the guide plate 5713 via a bearing 5719 so as to be rotatable and immovable in the axial direction, and a motor 5907 that rotates the screw shaft 5905 (see FIG. 15). ), And an elevating member 5909 screwed to the screw shaft 5905 and connected to the elevating plate 5901, and the pins 51 are protruded from a column 5911 erected on the elevating plate 5901. The vertically moving mechanism 59
Is driven by the rotation of the motor 5907.
The pin 51 is configured to move up and down via the lift plate 09 and the lifting plate 5901.

FIG. 17 shows a front view of the moving mechanism 53. In FIG.
911 shows magnets attached at 911 places,
At the top and bottom of the pin 51 on the tip surface of the
Are formed, and in the state where the pin 51 is engaged with the pin hole 307, the magnet 5913 is attached to the intermediate portion 301 of the spring 3.
, And both projections 5915 are configured to engage with both upper and lower edges of the intermediate portion 301.

As shown in FIGS. 5 and 6, the spring supply means 17 includes a magazine 61 containing a large number of springs 3 and a delivery mechanism for transferring the springs 3 from the magazine 61 to the pins 51 of the spring positioning means 15. It consists of 63. The magazine 61 is provided in two rows, and FIG.
As shown in FIG. 8, an outlet 61 at the front end of each magazine 61
01 is provided with a take-out mechanism 65 for taking out the springs 3 one by one from the magazine 61. The take-out mechanism 65 includes a lifting block 6501 that is raised and lowered by a lifting drive source (not shown), and a magnet 6503 attached to the lifting block 6501.
505 are formed. The take-out mechanism 65 is configured such that the spring 3 is magnetically attached to the magnet 6503 by positioning the lifting / lowering block 6501 at the outlet 6101, and the lifting / lowering block 6501 is lifted from this state, whereby the spring 3
A step (not shown) of the elevating block 6501 is engaged with the lower edge of the intermediate portion 301, and the spring 3 of the take-out port 6101 is pulled up and taken out of the magazine 61.

As shown in FIGS. 5 and 6, the transfer mechanism 63 is supported on the base 9 and extends in the left-right direction of the base 9. 6303 which can be moved in the horizontal direction of the base 9
And a guide arm 6305 extending from the moving body 6303 to the front of the base 9. The transfer mechanism 63 further includes a moving frame 6307 supported by the guide arm 6305 and movable in the front-rear direction of the base 9;
An elevating frame 6309 supported by the moving frame 6307 so as to be able to move up and down, and a rotary actuator 6 supported by the elevating frame 6309 and rotatable in a horizontal plane
311 and a chuck 6313 supported at the lower end of the rotary actuator 6311. The delivery mechanism 63 is driven by a drive source (not shown). FIG.
9 shows a side view of a main part of the delivery mechanism 63, and the chuck 6313 is composed of a pair of openable and closable chuck pieces 6315. One of the chuck pieces 6315 is connected to the magnet 650.
19 is formed with a dimension that can be inserted into the gap W between the spring 3 magnetically attached to the groove 3505 and the groove 6505. Reference numeral 6317 in FIG. 19 denotes a stopper that can be engaged with the lifting frame 6309, and the upper limit of the lifting frame 6309 by the stopper 6317. The position is determined.

The delivery mechanism 63 includes a moving body 6303,
By the movement of the moving frame 6307 and the lifting frame 6309, the chuck 6313 alternately reciprocates between the outlet 6101 of each magazine 61 and the pin 51 of the spring positioning means 15, and the chuck 6313 is rotated by the rotation of the rotary actuator 6311. Is configured to be able to change the direction to any direction.
With the chuck 6313 opened, one chuck piece 6315 is inserted into the gap W, and then the chuck 63
13 is closed, and the chuck 63 is opposed to the magnetic force of the magnet 6503.
The spring 3 is transferred from the extracting mechanism 65 to the chuck 6313 by separating the spring 13 from the extracting mechanism 65, and the pin hole 307 of the spring 3 is
The spring 3 is magnetically attached to the magnet 5913, separates from the chuck 6313, and is transferred to the pin 51 by opening the chuck 6313.
FIG. 20 is a view taken in the direction of the arrow E in FIG.

As shown in FIG. 6, the spring welding means 19 includes a support base 1901 supported on the table 11 so as to be movable up and down and movable in the left and right directions.
A lifting / lowering and left / right moving mechanism (not shown) for raising / lowering the 901 or moving the upper horizontal member 103 in the longitudinal direction, and support pieces 1903 erected from places spaced apart before and after the support base 1901; An electrode 1905 supported on the inner surface of the support piece 1903 and an electrode 1905 on the rear side, respectively.
19 that moves away from and approaches the front electrode 1905
07. The two electrodes 1905 position and support the aperture grille 1 by spring support portions 21 and 23, and the upper horizontal member 1 by spring supply means 17.
03 on the outer surface of the spring holder 111
In the state where the base 303 is applied and positioned, the spring 303 is located at a position inside the spring holder 111 and at a position outside the base 303 of the spring 3. The spring welding means 19 actuates the cylinder 1907 to bring the two electrodes 1905 closer to the aperture grille 1 positioned and supported by the spring support portions 21 and 23, and the inner surface of the spring holder 111 and the base 3 of the spring 3.
The spring holder 111 and the spring 3 are configured to be welded by spot welding by making contact with the outer surfaces of the electrodes 03 and energizing between the electrodes 1905, respectively.

Next, the spring 3 by the welding device 7 is used.
Will be described. First, the pins 29 and 33 of the spring support portions 21 and 23 and the pin 51 of the spring positioning means 15 are moved outward of the table 11 by the moving mechanism 31 and the front and rear moving mechanisms 39 and 57. The aperture grill 1 is disposed inside the pins 29, 33, 51. Next, left and right vertical members 1
Then, the pin holes 307 of the springs 3 of the springs 05 face the pins 29, respectively.
To be engaged.

Next, when the springs 3 are welded to the three spring holders 111 of the lower horizontal member 103 and the left and right vertical members 105, each skirt portion 50 of the panel 5 is welded.
The three pins 505 of the lower and left and right skirt portions 503 are based on the three pin holes 307 calculated based on the attachment positions of the pins 505 with respect to the panel 3 and the torsion of the panel portion 501 and the grill 107. The relative position of the pin 33 with respect to the pin 29 that matches the mutual arrangement is determined, and the left and right moving mechanism 37 is operated accordingly,
The position of the pin 33 in the longitudinal direction of the lower horizontal member 103 is adjusted. Then, the pin 33 is brought closer to the aperture grille 1 side by the front / rear moving mechanism 39, and the pin 33 is engaged with the pin hole 307 of the spring 3 of the lower horizontal member 103. Further, the aperture is formed by the upper and lower fixing portions 25 and 27. The grill 1 is fixed, thereby positioning and supporting the aperture grill 1.

Next, one spring 3 is taken out of the magazine 61 by the take-out mechanism 65 of the spring supply means 17, and the spring 3 is transferred to the spring positioning means 15 by the delivery mechanism 63, and the pin hole 307 is inserted into the pin 51.
And the intermediate portion 301 is magnetically attached to the magnet 5913. Next, three pin holes 307 calculated at the time of welding the spring 3 to the three spring holders 111
Based on the location, the relative position of the pin 51 with respect to the pins 29 and 33 is determined so as to match the mutual arrangement of the pins 505 of the upper, lower, left and right skirt portions, and accordingly, the left and right moving mechanism 55 and the vertical moving mechanism 59 are determined. To adjust the position of the pin 51 in the longitudinal direction of the upper horizontal member 103 and the vertical direction of the table 11. Then, the pin 51 is moved closer to the aperture grill 1 side by the front-rear movement mechanism 57, and the base 303 of the spring 3 engaged with the pin 51 is abutted against the spring holder 111 of the upper horizontal member 103 and positioned.

Next, based on the relative position of the pin 51 with respect to the previously determined pins 29 and 33, the support 1901 of the spring welding means 19 is moved up and down by the above-mentioned up-and-down and right-and-left movement mechanism, or the length of the upper horizontal member 103 is increased. The two electrodes 1905 are made to face the inner surface of the spring holder 111 and the outer surface of the base 303 of the spring 3, respectively. Further, both electrodes 1905 are operated by a cylinder 1907.
Are brought close to each other and brought into contact with the spring holder 111 and the base 303 of the spring 3, respectively, and electricity is supplied between the electrodes 1905 to weld the spring holder 111 and the spring 3.

Spring holder 111 and spring 3
Is welded, the spring welding means 19, the spring positioning means 15, the upper and lower fixing portions 25 and 27, and the spring support portions 21 and 23 are sequentially returned to the original state by the reverse procedure to the above, and the table 11 is returned. The aperture grille 1 is removed from above, and the next aperture grille 1 is arranged inside each of the pins 29, 33, 51. And after that,
By repeating the above operation, the springs 3 are welded to the spring holders 111 of the upper and horizontal members of each aperture grill 1. The positions of the pins 29 and 33 when the aperture grille 1 is positioned and held and the positions of the pins 51 when the spring 3 is positioned are determined by the positions of the grill 107 of the aperture grille 1 and the panel 5 to which the grille 107 is mounted. According to three 307 pin holes calculated from the result of measuring the twist of the panel part 501 and the pin 505 attachment position of the panel 5,
It is determined individually for each aperture grill 1.

As described above, according to the embodiment, the aperture grill 1 is mounted on the panel 5 based on the measurement result of the position where the pin 505 is attached to each skirt 503 of the panel 5 and the torsion of the panel 501 and the grill 107. 5, the pin hole 307 is determined so that the distance between the surface of the grill 107 and the inner surface of the panel portion 501 is always constant at any location, and the pin hole 307 is located at the determined location. The springs 3 are first welded to the spring holders 111 of the lower horizontal member 103 and the left and right vertical members 105, and then the relative positions of the pin holes 307 of the three springs 3 which are welded are changed to the lower and left and right skirt portions 503 of the panel 5. With the aperture grille 1 positioned so as to match the mutual arrangement of the pins 505, one remaining spring 3 is moved forward. Pin hole 307 in the indexing the position is to be welded to the spring holder 111 of the upper lateral members 103 is positioned so as to be located. For this reason,
The four springs 3 are connected to the upper and lower members and the left and right members 10 respectively.
Each of the springs 3 can be accurately welded to the spring holder 111 without disturbing the relative positions of the pin holes 307 of the springs 3 without simultaneously welding the spring holders 3 and 105.

In order to first weld the springs 3 to the spring holders 111 of the lower horizontal member 103 and the left and right vertical members 105, these three springs 3 are used.
At the time of welding, the two welding means for the upper and lower horizontal members 103 are not arranged side by side between the upper and lower horizontal members 103 having a small interval, and only the welding means for the lower horizontal member 103 is required. For example, even a CRT having a relatively small screen size of, for example, 16 inches can perform welding work without any trouble.

In practicing the present invention, the configuration of a welding device for welding the spring 3 to the spring holder 111 of the lower horizontal member 103 and the left and right vertical members 105, and a welding device for welding the spring 3 to the upper horizontal member 103 The configuration of 7 is not limited to the configuration shown in the embodiment, and is arbitrary. The spring 3 of the lower horizontal member 103 is replaced by the spring 3 of the lower horizontal member 103 and the spring 3 of the other three members 103 and 105. The spring 3 to be welded later, such as welding after welding of
Is optional.

[0043]

As described above, according to the present invention, a panel portion and four upper, lower, left and right skirt portions extending from four sides of the panel portion are provided. A panel having mounting pins attached thereto, and a color disposed inside the panel and arranged inside the four sides facing each of the skirts such that a distance between the panel and the panel is constant. An aperture grill on which a sorting grill is stretched; and three apertures which are welded to three of the four sides of the aperture grill, and wherein the aperture grill is disposed inside the panel. A panel mounting spring having a pin hole for engaging a pin of the three skirt portions facing the portion, wherein the spring is not welded to the aperture grille. A welding device for a retrofit spring for welding a spring to one of three side portions, wherein the welding device is disposed at a reference position corresponding to a pin arrangement of the three skirt portions, and is provided in a pin hole of the three side springs. The three first positioning pins to be engaged and the respective first positioning pins are respectively moved between the reference location and the location where the respective first positioning pins are disengaged from the pin holes of the three side springs. A first engagement / disengagement moving mechanism for moving, and facing one side of the aperture grill in a state where the three first positioning pins are respectively engaged with pin holes of springs on the three sides; A second positioning pin disposed at a reference position where the arrangement with respect to one first positioning pin matches the arrangement of the remaining one skirt part pin with respect to the three skirt part pins; A second engagement / disengagement moving mechanism for moving the second positioning pin from the reference position of the second positioning pin to a position moved in a direction away from the one side portion relative to the reference position; Spring supply means for supplying a spring welded to one side of the aperture grill to the second positioning pin, and engaging a pin hole of the spring with the second positioning pin; At a reference position, a spring welding means for welding the spring having a pin hole engaged with the second positioning pin to one side of the aperture grill is provided.

For this reason, in welding the four springs for mounting the panel to the four sides of the aperture grill, the relative positions of the pin holes of the springs are not disturbed without simultaneously welding the four springs. Thus, each spring can be welded to the aperture grill with high accuracy, and the spring can be easily welded by securing a wide space around the spring without attaching the aperture grill to the panel.

[Brief description of the drawings]

FIG. 1 is a perspective view of an aperture grill to which the present invention is applied as viewed from the back side.

FIG. 2 is a perspective view of a panel to which the aperture grill of FIG. 1 is attached, as viewed from the back side.

FIG. 3 is a perspective view showing a state in which an aperture grill is attached to a panel.

FIG. 4 is a front view of the welding device according to the present invention.

FIG. 5 is a plan view of the welding device according to the present invention.

FIG. 6 is a side view of the welding device according to the present invention.

FIG. 7 is a plan view of a table.

FIG. 8 is a side view of a pin moving mechanism for left and right vertical members.

9 is a view as viewed in the direction of the arrow A in FIG. 8;

FIG. 10 is a view taken in the direction of the arrow B in FIG. 9;

FIG. 11 is a side view of a pin moving mechanism for the lower horizontal member.

FIG. 12 is a view as viewed in the direction of arrow C in FIG. 11;

FIG. 13 is a view as viewed in the direction of arrow D in FIG. 11;

FIG. 14 is a front view of an upper fixing portion.

FIG. 15 is a side view of a pin moving mechanism of the spring positioning means.

16 is a plan view of the moving mechanism shown in FIG.

FIG. 17 is a front view of the moving mechanism shown in FIG.

FIG. 18 is a plan view of a magazine and a take-out mechanism.

FIG. 19 is a side view of a main part of the delivery mechanism.

20 is a view as viewed in the direction of the arrow E in FIG. 19;

[Explanation of symbols]

1 aperture grill, 107 grill, 111
Spring holder, 3 springs, 307 pin hole, 5 panel, 501 panel, 503 skirt, 505, 29, 33, 51 pins, 7 welding device, 17 spring supply means, 19 spring welding means, 31 moving mechanism, 37, 55 left and right moving mechanism, 39,57 forward and backward moving mechanism, 59 elevating moving mechanism

Claims (3)

(57) [Claims] 1. A panel comprising: a panel portion; four upper, lower, left and right skirt portions extending from four sides of the panel portion, and a mounting pin for an aperture grill is attached to the four skirt portions; An aperture grill which is arranged inside the panel and has a color selection grille stretched inside four sides facing the respective skirts so as to have a constant distance from the panel. And three of the four sides of the aperture grill are welded to three sides, and the aperture grill is disposed inside the panel, and the pins of the three skirts face the three sides. A panel mounting spring having a pin hole engaged with the color cathode ray tube, wherein after the spring is welded to one side of the aperture grille where the spring is not welded. A welding device for a mounting spring, wherein three first skirt portions are respectively disposed at reference positions corresponding to the pin arrangement of the three skirt portions, and are respectively engaged with pin holes of the three side spring portions. A positioning pin; each of the first positioning pins;
A first engagement / disengagement moving mechanism for moving a positioning pin between a position where the positioning pin separates from a pin hole of the three side springs;
With the positioning pins respectively engaged with one side of the aperture grille, the arrangement with respect to the three first positioning pins corresponds to the arrangement of the remaining one skirt part with respect to the three skirt pins. A second positioning pin disposed at a matching reference location; and a location where the second positioning pin is moved from the reference location of the second positioning pin in a direction away from the one side than the reference location. A spring for welding to one side of the aperture grill is supplied to the second positioning pin, and a pin hole of the spring is engaged with the second positioning pin. A spring supply unit to be combined with the second positioning pin;
A welding means for welding the spring in which a pin hole is engaged with a positioning pin to one side of the aperture grill; and a welding device for a retrofit spring of the aperture grill. 2. A first position adjusting moving mechanism for moving at least one of the three first positioning pins in a direction intersecting with a moving direction of the first disengaging moving mechanism; A second positioning pin,
2. The welding device for a retrofit spring of an aperture grill according to claim 1, further comprising: a second position adjusting moving mechanism for moving in a direction intersecting a moving direction of the engaging and disengaging moving mechanism. 3. The amount of movement of the first positioning pin by the first position adjustment moving mechanism and the amount of movement of the second positioning pin by the second position adjustment moving mechanism are determined by taking the pin relative to the panel. 3. The welding device for a retrofit spring of an aperture grill according to claim 2, wherein the welding position is determined according to a twist position of the panel portion and the grill.